I know that there is a difference in the Earles forks for the early and later models-the flat spot on the rear lower cross piece. But other than that, is there any other differences from one period to the next? I have a 1956 BMW R69 with no front end and would like to be sure of buying the correct set up. thanks

From Slabon's book...In 1965, stiffer springs were used in the shock absorbers. Also pre-1965 crossover tubes on the Earles fork did not have a grease nipple. This was added so that the bearings on either side could be more easily lubed.

Well, its pretty difficult to distinguish an exact production date unless it is stamped somewhere. My concern is to have a correct motorcycle. Not sure how you managed to determine my motives since we do not know each other.

I think you are OK with any year fork, except the 50S and 69S maybe. Others will know for sure, but those with the hydraulic steering damper may have different cast lugs for that. Your R69 did not have the hydraulic damper.

Thanks for that train of thought. I happen to have 2 frames disassembled in my shop right now, a 1960 R60 and a 1960 R69s. I will compare the forks and frames for differences. A friend with over 200 vintage BMWs said the R69 did have the hydraulic steering cylinder, but I certainly don't know. I need to find out at some point so that I get the correct parts that this project is missing.